IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg)
Hydra
The Hydra
OriginAncient
AbbreviationHya
GenitiveHydrae
Pronunciation/ˈhaɪdrə/ genitive /ˈhaɪdriː/
HIGH-druh
LocationCelestial Equator
Primary StarAlphard (α Hya)
Right Ascention 9h 28m Declination -8° 40'
Martian Solar Lag δ(🜨→♂) +0.272 h (16.3 min)
Hydra represents the Lernaean Hydra, a reptilian monster so vile that even its breath and blood were highly poisonous. It had nine serpent heads, eight mortal and one immortal. Every time one was cut off two would grow in its place. Defeating the Lernaean Hydra was the second labor assigned to Hercules by King Eurystheus. In the marshes of Lerna, Hercules drew out the Hydra from its lair, and with his mighty club, bashed one of its heads in. In its place, two heads sprouted, just as mean and deadly as the original. He realized he would need to take a different approach. He had his nephew Iolaus quickly cauterize each stump after it was bashed in. This prevented the heads from growing back. Hercules did this with each of the mortal heads. He struck off the immortal head and buried it deep in the ground and placed a huge rock on top of it. With his second labor complete, he dipped the tips of his arrows into the blood of the Hydra, covering them with deadly poison. In a second myth involving Hydra, this constellation represents the snake that Corvus used in a lie to Apollo.
www.underthesky.com
Hydra as depicted by Johann Bayer in his Uranometria (1603). Source image provided by www.RareMaps.com — Barry Lawrence Ruderman Antique Maps Inc. Via www.underthenightsky.com.
←Hydra -289→
SolPhoDeiTerVenJovSat
1234
567891011
12131415161718
19202122232425
262728
1 Hydra -289 2 Hydra -289 3 Hydra -289 4 Hydra -289 5 Hydra -289 6 Hydra -289 7 Hydra -289 8 Hydra -289 9 Hydra -289 10 Hydra -289 11 Hydra -289 12 Hydra -289 13 Hydra -289 14 Hydra -289 15 Hydra -289 16 Hydra -289 17 Hydra -289 18 Hydra -289 19 Hydra -289 20 Hydra -289 21 Hydra -289 22 Hydra -289 23 Hydra -289 24 Hydra -289 25 Hydra -289 26 Hydra -289 27 Hydra -289 28 Hydra -289 2 Centaurus -288 23 May 1067 24 May 1067 25 May 1067 26 May 1067 27 May 1067 28 May 1067 29 May 1067 30 May 1067 31 May 1067 1 June 1067 2 June 1067 3 June 1067 4 June 1067 5 June 1067 6 June 1067 7 June 1067 8 June 1067 9 June 1067 10 June 1067 11 June 1067 12 June 1067 13 June 1067 14 June 1067 15 June 1067 16 June 1067 17 June 1067 18 June 1067 19 June 1067 20 June 1067
MS -340581 MS -340582 MS -340583 MS -340584 MS -340585 MS -340586 MS -340587 MS -340588 MS -340589 MS -340590 MS -340591 MS -340592 MS -340593 MS -340594 MS -340595 MS -340596 MS -340597 MS -340598 MS -340599 MS -340600 MS -340601 MS -340602 MS -340603 MS -340604 MS -340605 MS -340606 MS -340607 MS -340608 MS -340554 MD -350052 MD -350051 MD -350050 MD -350049 MD -350048 MD -350047 MD -350046 MD -350045 MD -350044 MD -350043 MD -350042 MD -350041 MD -350040 MD -350039 MD -350038 MD -350037 MD -350036 MD -350035 MD -350034 MD -350033 MD -350032 MD -350031 MD -350030 MD -350029 MD -350028 MD -350027 MD -350026 MD -350025 MD -350024